:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --side: #020617;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #1d4ed8;
  --warn: #fbbf24;
  --bad: #fca5a5;
  --ok: #86efac;
  --line: #334155;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font-family: ui-sans-serif, system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
.layout { display: flex; min-height: 100%; }
.side { width: 200px; background: var(--side); padding: 16px; flex-shrink: 0; }
.brand { font-size: 13px; letter-spacing: .08em; color: var(--muted); margin-bottom: 16px; }
.nav a, .nav button {
  display: block; width: 100%; text-align: left; padding: 8px 10px; border: 0;
  background: transparent; color: var(--muted); border-radius: 6px; margin-bottom: 4px;
  font: inherit; cursor: pointer;
}
.nav a.active, .nav button.active { background: var(--accent); color: #fff; }
.main { flex: 1; padding: 20px; overflow: auto; }
h1 { font-size: 22px; font-weight: 600; margin: 0 0 16px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.card { background: var(--panel); border-radius: 8px; padding: 14px; }
.card .k { font-size: 12px; color: var(--muted); }
.card .v { font-size: 28px; margin-top: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; }
.panel { background: var(--panel); border-radius: 8px; padding: 14px; }
form { display: grid; gap: 10px; max-width: 480px; }
label { font-size: 12px; color: var(--muted); display: grid; gap: 4px; }
input, select {
  background: var(--side); color: var(--text); border: 1px solid var(--line);
  border-radius: 6px; padding: 8px 10px; font: inherit;
}
button.pri {
  background: var(--accent); color: #fff; border: 0; border-radius: 6px;
  padding: 10px 14px; font: inherit; cursor: pointer;
}
button.danger { background: #7f1d1d; color: #fff; border: 0; border-radius: 6px; padding: 6px 10px; cursor: pointer; }
.login { max-width: 360px; margin: 12vh auto; background: var(--panel); padding: 24px; border-radius: 12px; }
.err { color: var(--bad); font-size: 13px; }
.ok { color: var(--ok); font-size: 13px; }
.once { background: #422006; color: #fde68a; padding: 12px; border-radius: 8px; word-break: break-all; }
.meta { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.row-actions { display: flex; gap: 8px; }
@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .side { width: auto; }
  .cards { grid-template-columns: 1fr; }
}